In Exercises, 

(a) Graph the given function, 

(b) Find all values of x where the function is discontinuous, and 

(c) Find the limit from the left and from the right at any values of x found Sketch the graph of the derivative for each function shown. in part (b).

f(x) = x if x - 2 4 x if x if 1 < 1 x 2 > 2